The Net (1995) (Starring Sandra Bullock)

Angela Bennett is a computer expert. This young and beautiful analyst is never far from a computer and modem. The only activity she has outside of computers is visiting her mother. A friend, whom she's only spoken to over the net and phone,
Dale Hessman, sent her a program with a weird glitch for her to de-bug. That night, he left to meet her and was killed in a plane crash. Angela discovers secret information on the disk she has received only hours before she leaves for vacation. Her life then turns into a nightmare, her records are erased from existence and she is given a new identity, one with a police record. She struggles to find out why this has happened and who has it in for her.